1992 年

物理 · 共 32 題 · 點擊選項即時核對答案

只看錯題本頁已答 0 / 2

31.

${}^{238}_{92}\mathrm{U}$ decays by emitting two $\alpha$ particles and two $\beta$ particles. Which of the following represents the resulting nuclide ?

32.

Which of the following diagrams correctly shows the deflections of $\alpha$ , $\beta$ and $\gamma$ rays in a uniform magnetic field pointing into the paper ?

Four diagrams A to D showing tracks of alpha, beta and gamma rays through a circular region with a magnetic field into the paper